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<h2 title="Interface Condition" class="title">Interface Condition</h2>
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<pre>@ConsumerType
public interface <span class="strong">Condition</span></pre>
<div class="block">The interface implemented by a Condition. Conditions are bound to Permissions
using Conditional Permission Info. The Permissions of a ConditionalPermission
Info can only be used if the associated Conditions are satisfied.</div>
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<td class="colFirst"><code>static <a href="../../../../org/osgi/service/condpermadmin/Condition.html" title="interface in org.osgi.service.condpermadmin">Condition</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/osgi/service/condpermadmin/Condition.html#FALSE">FALSE</a></strong></code>
<div class="block">A Condition object that will always evaluate to false and that is never
postponed.</div>
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<td class="colFirst"><code>static <a href="../../../../org/osgi/service/condpermadmin/Condition.html" title="interface in org.osgi.service.condpermadmin">Condition</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/osgi/service/condpermadmin/Condition.html#TRUE">TRUE</a></strong></code>
<div class="block">A Condition object that will always evaluate to true and that is never
postponed.</div>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../org/osgi/service/condpermadmin/Condition.html#isMutable()">isMutable</a></strong>()</code>
<div class="block">Returns whether the Condition is mutable.</div>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../org/osgi/service/condpermadmin/Condition.html#isPostponed()">isPostponed</a></strong>()</code>
<div class="block">Returns whether the evaluation must be postponed until the end of the
permission check.</div>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../org/osgi/service/condpermadmin/Condition.html#isSatisfied()">isSatisfied</a></strong>()</code>
<div class="block">Returns whether the Condition is satisfied.</div>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../org/osgi/service/condpermadmin/Condition.html#isSatisfied(org.osgi.service.condpermadmin.Condition[],%20java.util.Dictionary)">isSatisfied</a></strong>(<a href="../../../../org/osgi/service/condpermadmin/Condition.html" title="interface in org.osgi.service.condpermadmin">Condition</a>[] conditions,
java.util.Dictionary<java.lang.Object,java.lang.Object> context)</code>
<div class="block">Returns whether the specified set of Condition objects are satisfied.</div>
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<h4>TRUE</h4>
<pre>static final <a href="../../../../org/osgi/service/condpermadmin/Condition.html" title="interface in org.osgi.service.condpermadmin">Condition</a> TRUE</pre>
<div class="block">A Condition object that will always evaluate to true and that is never
postponed.</div>
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<h4>FALSE</h4>
<pre>static final <a href="../../../../org/osgi/service/condpermadmin/Condition.html" title="interface in org.osgi.service.condpermadmin">Condition</a> FALSE</pre>
<div class="block">A Condition object that will always evaluate to false and that is never
postponed.</div>
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<pre>boolean isPostponed()</pre>
<div class="block">Returns whether the evaluation must be postponed until the end of the
permission check. If this method returns <code>false</code> (or this Condition
is immutable), then this Condition must be able to directly answer the
<a href="../../../../org/osgi/service/condpermadmin/Condition.html#isSatisfied()"><code>isSatisfied()</code></a> method. In other words, isSatisfied() will return
very quickly since no external sources, such as for example users or
networks, need to be consulted.
<p>
This method must always return the same value whenever it is called so
that the Conditional Permission Admin can cache its result.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>true</code> to indicate the evaluation must be postponed.
Otherwise, <code>false</code> if the evaluation can be performed
immediately.</dd></dl>
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<h4>isSatisfied</h4>
<pre>boolean isSatisfied()</pre>
<div class="block">Returns whether the Condition is satisfied. This method is only called
for immediate Condition objects or immutable postponed conditions, and
must always be called inside a permission check. Mutable postponed
Condition objects will be called with the grouped version
<a href="../../../../org/osgi/service/condpermadmin/Condition.html#isSatisfied(org.osgi.service.condpermadmin.Condition[],%20java.util.Dictionary)"><code>isSatisfied(Condition[],Dictionary)</code></a> at the end of the permission
check.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>true</code> to indicate the Conditions is satisfied. Otherwise,
<code>false</code> if the Condition is not satisfied.</dd></dl>
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<h4>isMutable</h4>
<pre>boolean isMutable()</pre>
<div class="block">Returns whether the Condition is mutable. A Condition can go from mutable
(<code>true</code>) to immutable (<code>false</code>) over time but never from
immutable (<code>false</code>) to mutable (<code>true</code>).</div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>true</code> <a href="../../../../org/osgi/service/condpermadmin/Condition.html#isSatisfied()"><code>isSatisfied()</code></a> can change. Otherwise,
<code>false</code> if the value returned by <a href="../../../../org/osgi/service/condpermadmin/Condition.html#isSatisfied()"><code>isSatisfied()</code></a>
will not change for this condition.</dd></dl>
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<h4>isSatisfied</h4>
<pre>boolean isSatisfied(<a href="../../../../org/osgi/service/condpermadmin/Condition.html" title="interface in org.osgi.service.condpermadmin">Condition</a>[] conditions,
java.util.Dictionary<java.lang.Object,java.lang.Object> context)</pre>
<div class="block">Returns whether the specified set of Condition objects are satisfied.
Although this method is not static, it must be implemented as if it were
static. All of the passed Condition objects will be of the same type and
will correspond to the class type of the object on which this method is
invoked. This method must be called inside a permission check only.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>conditions</code> - The array of Condition objects, which must all be of
the same class and mutable. The receiver must be one of those
Condition objects.</dd><dd><code>context</code> - A Dictionary object that implementors can use to track
state. If this method is invoked multiple times in the same
permission check, the same Dictionary will be passed multiple
times. The SecurityManager treats this Dictionary as an opaque
object and simply creates an empty dictionary and passes it to
subsequent invocations if multiple invocations are needed.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>true</code> if all the Condition objects are satisfied.
Otherwise, <code>false</code> if one of the Condition objects is not
satisfied.</dd></dl>
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